Comparison of Hibernate with H2 server vs ObjectDB embedded

Each of the following tables focuses on a specific database operation, where the last table presents average results comparison.

Speed comparison of JPA database persistence operations (normalized score, higher is better)

Transaction Size =>	Few Entities		Many Entities		Average Score
	Hibernate H2 server	ObjectDB embedded	Hibernate H2 server	ObjectDB embedded	Hibernate H2 server	ObjectDB embedded
Basic Person Test	4.6	100	3.0	100	3.8	100
Element Collection Test	3.7	100	1.1	100	2.4	100
Inheritance Test	6.7	100	3.1	100	4.9	100
Indexing Test	8.2	100	4.2	100	6.2	100
Graph (Binary Tree) Test	3.4	88.4	3.9	100	3.7	94.2
Multithreading Test	6.8	100	5.0	100	5.9	100
All Tests	5.6	98.1	3.4	100	4.5	99.0

The results above show that in general ObjectDB embedded is much more efficient than Hibernate with H2 server in persisting JPA entity objects to the database. Comparing the normalized speed of Hibernate with H2 database server (4.5) to the normalized speed of ObjectDB embedded database (99.0) reveals that in these tests, ObjectDB embedded is 22.0 times faster than Hibernate with H2 server.

A huge performance gap has been detected when using JPA element collections with large transaction size. Comparing the normalized speed of Hibernate with H2 database server (1.1) to the normalized speed of ObjectDB embedded database (100) reveals that in that case, ObjectDB embedded is 90.9 times faster than Hibernate with H2 server.

Speed comparison of JPA database retrieval operations (normalized score, higher is better)

Retrieval Size =>	Few Entities		Many Entities		Average Score
	Hibernate H2 server	ObjectDB embedded	Hibernate H2 server	ObjectDB embedded	Hibernate H2 server	ObjectDB embedded
Basic Person Test	3.1	100	6.0	100	4.6	100
Element Collection Test	1.0	100	1.1	100	1.0	100
Inheritance Test	2.9	100	7.6	100	5.2	100
Indexing Test	2.6	100	7.0	100	4.8	100
Graph (Binary Tree) Test	0.42	100	1.1	100	0.78	100
Multithreading Test	6.5	100	10.5	100	8.5	100
All Tests	2.8	100	5.6	100	4.2	100

The results above show that in general ObjectDB embedded is much more efficient than Hibernate with H2 server in retrieving JPA entity objects from the database. Comparing the normalized speed of Hibernate with H2 database server (4.2) to the normalized speed of ObjectDB embedded database (100) reveals that in these tests, ObjectDB embedded is 23.8 times faster than Hibernate with H2 server.

A huge performance gap has been detected when using graphs of objects with small retrieval size. Comparing the normalized speed of Hibernate with H2 database server (0.42) to the normalized speed of ObjectDB embedded database (100) reveals that in that case, ObjectDB embedded is 238 times faster than Hibernate with H2 server.

Speed comparison of JPA database query operations (normalized score, higher is better)

Retrieval Size =>	Few Entities		Many Entities		Average Score
	Hibernate H2 server	ObjectDB embedded	Hibernate H2 server	ObjectDB embedded	Hibernate H2 server	ObjectDB embedded
Basic Person Test	3.7	100	1.0	100	2.3	100
Element Collection Test	3.7	100	0.63	100	2.2	100
Inheritance Test	3.2	100	1.4	100	2.3	100
Indexing Test	1.7	100	5.8	100	3.8	100
Multithreading Test	1.1	100	0.88	100	1.0	100
All Tests	2.7	100	1.9	100	2.3	100

The results above show that in general ObjectDB embedded is much more efficient than Hibernate with H2 server in executing the tested JPA queries. Comparing the normalized speed of Hibernate with H2 database server (2.3) to the normalized speed of ObjectDB embedded database (100) reveals that in these tests, ObjectDB embedded is 43.5 times faster than Hibernate with H2 server.

A huge performance gap has been detected when using JPA element collections with large retrieval size. Comparing the normalized speed of Hibernate with H2 database server (0.63) to the normalized speed of ObjectDB embedded database (100) reveals that in that case, ObjectDB embedded is 159 times faster than Hibernate with H2 server.

Speed comparison of JPA database update operations (normalized score, higher is better)

Transaction Size =>	Few Entities		Many Entities		Average Score
	Hibernate H2 server	ObjectDB embedded	Hibernate H2 server	ObjectDB embedded	Hibernate H2 server	ObjectDB embedded
Basic Person Test	2.9	100	1.8	100	2.4	100
Element Collection Test	2.6	100	1.1	100	1.9	100
Inheritance Test	3.2	100	2.5	100	2.9	100
Indexing Test	2.9	100	2.7	100	2.8	100
Graph (Binary Tree) Test	1.2	100	0.43	100	0.79	100
Multithreading Test	5.6	100	2.4	100	4.0	100
All Tests	3.1	100	1.8	100	2.5	100

The results above show that in general ObjectDB embedded is much more efficient than Hibernate with H2 server in updating JPA entity objects in the database. Comparing the normalized speed of Hibernate with H2 database server (2.5) to the normalized speed of ObjectDB embedded database (100) reveals that in these tests, ObjectDB embedded is 40.0 times faster than Hibernate with H2 server.

A huge performance gap has been detected when using graphs of objects with large transaction size. Comparing the normalized speed of Hibernate with H2 database server (0.43) to the normalized speed of ObjectDB embedded database (100) reveals that in that case, ObjectDB embedded is 233 times faster than Hibernate with H2 server.

Speed comparison of JPA database removal operations (normalized score, higher is better)

Transaction Size =>	Few Entities		Many Entities		Average Score
	Hibernate H2 server	ObjectDB embedded	Hibernate H2 server	ObjectDB embedded	Hibernate H2 server	ObjectDB embedded
Basic Person Test	3.8	100	2.4	100	3.1	100
Element Collection Test	1.9	100	1.1	100	1.5	100
Inheritance Test	3.7	100	2.5	100	3.1	100
Indexing Test	7.6	100	3.1	100	5.3	100
Graph (Binary Tree) Test	0.99	100	0.91	100	0.95	100
Multithreading Test	6.1	100	7.3	100	6.7	100
All Tests	4.0	100	2.9	100	3.5	100

The results above show that in general ObjectDB embedded is much more efficient than Hibernate with H2 server in deleting JPA entity objects from the database. Comparing the normalized speed of Hibernate with H2 database server (3.5) to the normalized speed of ObjectDB embedded database (100) reveals that in these tests, ObjectDB embedded is 28.6 times faster than Hibernate with H2 server.

A huge performance gap has been detected when using graphs of objects with large transaction size. Comparing the normalized speed of Hibernate with H2 database server (0.91) to the normalized speed of ObjectDB embedded database (100) reveals that in that case, ObjectDB embedded is 110 times faster than Hibernate with H2 server.

Comparison of JPA/Database speed - the averages (normalized score, higher is better)

Transaction/Retrieval Size	Few Entities		Many Entities		Average Score
	Hibernate H2 server	ObjectDB embedded	Hibernate H2 server	ObjectDB embedded	Hibernate H2 server	ObjectDB embedded
Basic Person Test	3.6	100	2.8	100	3.2	100
Element Collection Test	2.6	100	1.0	100	1.8	100
Inheritance Test	4.0	100	3.4	100	3.7	100
Indexing Test	4.6	100	4.5	100	4.6	100
Graph (Binary Tree) Test	1.5	97.1	1.6	100	1.6	98.5
Multithreading Test	5.2	100	5.2	100	5.2	100
All Tests	3.7	99.6	3.2	100	3.4	99.8

The results above show that in general ObjectDB embedded is much more efficient than Hibernate with H2 server in performing JPA database operations. Comparing the normalized speed of Hibernate with H2 database server (3.4) to the normalized speed of ObjectDB embedded database (99.8) reveals that in these tests, ObjectDB embedded is 29.4 times faster than Hibernate with H2 server.

A huge performance gap has been detected when using JPA element collections with large transaction/retrieval size. Comparing the normalized speed of Hibernate with H2 database server (1.0) to the normalized speed of ObjectDB embedded database (100) reveals that in that case, ObjectDB embedded is 100 times faster than Hibernate with H2 server.

JPA Performance Benchmark (JPAB)